How to check internet connectivity in android?

Question

friends,

i am trying to check internetconnectivity in android and using following code

final ConnectivityManager conn_manager = (ConnectivityManager)         


        

Answer 1

You can use requstRouteToHost to check if you can connect to a specific IP address.

Answer 2

Use this nifty library: http://code.google.com/p/connectivity

You can subscribe to network status notification and get a callback when network status changes. Or, you can query directly if network is available. Very simple to use.

Answer 3

Probably some issue with the logic you have in the if clause there.

I use this:

/**
 * Checks if we have a valid Internet Connection on the device.
 * @param ctx
 * @return True if device has internet
 *
 * Code from: http://www.androidsnippets.org/snippets/131/
 */
public static boolean haveInternet(Context ctx) {

    NetworkInfo info = (NetworkInfo) ((ConnectivityManager) ctx
            .getSystemService(Context.CONNECTIVITY_SERVICE)).getActiveNetworkInfo();

    if (info == null || !info.isConnected()) {
        return false;
    }
    if (info.isRoaming()) {
        // here is the roaming option you can change it if you want to
        // disable internet while roaming, just return false
        return false;
    }
    return true;
}